answer: dave makes $4000 a month.
Step-by-step explanation: assuming he makes the same amount every month, the salary is what he earns in a year, and since there are 12 months in a year, divide the yearly amount by the amount of months to get the unit rate (one month)
48000/12 = 4,000
so, going with this, we can say he makes $4000 a month.
i hope this helped and have a great day! if you need any further assistance with this specific question or i made any mistakes, please let me know!